Efficacious extra U(1) factor for the supersymmetric standard model

Keith, E.; Ma, Ernest

doi:10.1103/physrevd.54.3587

Cited by 49 publications

(45 citation statements)

References 21 publications

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“…Supersymmetric models with an additional U(1) N gauge symmetry have been studied in [16] in the context of non-standard neutrino models with extra singlets, in [25] from the point of view of Z − Z ′ mixing, in [13] and [25]- [26] where the neutralino sector was explored, in [13], [36] where the renormalisation group (RG) flow of couplings was examined and in [12]- [14] where EWSB was studied. The presence of a Z ′ boson and of exotic quarks predicted by the Exceptional SUSY model provides spectacular new physics signals at the LHC which were analysed in [32]- [34], [37].…”

mentioning

confidence: 99%

E6inspired supersymmetric models with exact custodial symmetry

Nevzorov

2013

Phys. Rev. D

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The breakdown of E 6 gauge symmetry at high energies may lead to supersymmetric (SUSY) models based on the Standard Model (SM) gauge group together with extra U (1) ψ and U (1) χ gauge symmetries. To ensure anomaly cancellation the particle content of these E 6 inspired models involves extra exotic states that generically give rise to non-diagonal flavour transitions and rapid proton decay. We argue that a single discreteZ H 2 symmetry can be used to forbid tree-level flavor-changing transitions, as well as the most dangerous baryon and lepton number violating operators.We present 5D and 6D orbifold GUT constructions that lead to the E 6 inspired SUSY models of this type. The breakdown of U (1) ψ and U (1) χ gauge symmetries that preserves E 6 matter parity assignment guarantees that ordinary quarks and leptons and their superpartners, as well as the exotic states which originate from 27 representations of E 6 survive to low energies. These E 6 inspired models contain two dark-matter candidates and must also include additional TeV scale vectorlike lepton or vectorlike down type quark states to render the lightest exotic quark unstable. We examine gauge coupling unification in these models and discuss their implications for collider phenomenology and cosmology.

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confidence: 99%

E6inspired supersymmetric models with exact custodial symmetry

Nevzorov

2013

Phys. Rev. D

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“…Although it is possible to add extra matter to the theory to bring the gauge couplings back into alignment at the high scale (see e.g. [63,64,53]), we defer a discussion of the effects of extra matter (beyond that needed to fill a 27 of E 6 ) to the next section.…”

Section: η-Model Of Ementioning

confidence: 99%

Disrupting the one-loop renormalization group invariant M/α in supersymmetry

Kribs¹

1998

Nuclear Physics B

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It is well known that in low energy supersymmetry the ratio of the gaugino mass to the gauge coupling squared, M/α, is renormalization group invariant to one-loop. We present a systematic analysis of the corrections to this ratio, including standard two-loop corrections from gauge and Yukawa couplings, corrections due to an additional U (1) ′ gaugino, threshold corrections, superoblique corrections, corrections due to extra matter, GUT and Planck scale corrections, and "corrections" from messenger sectors with supersymmetry breaking communicated via gauge-mediation. We show that many of these effects induce corrections at the level of a few to tens of percent, but some could give much larger corrections, drastically disrupting the renormalization group extrapolation of the ratio to higher scales. Our analysis is essentially model-independent, and therefore can be used to determine the ambiguities in extrapolating the ratio in any given model between the weak scale and higher scales.

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“…Because of the spontaneous breaking of the new U(1) factors additional D-terms appear in comparison to the MSSM [3,7,10,17,21,29,40]. Neglecting the mixing of the left and right sfermions which is small for the first two generations the mass terms in the rank-5 [rank-6] model are…”

Section: E Sfermion Sectormentioning

confidence: 99%

“…The 6 × 6 and 7 × 7 neutralino mixing matrices of the models R5 1 and R5 2 , respectively, are obtained as the upper left 6 × 6 and 7 × 7 submatrices of Y as shown in eq. (6) [3,11,15,16,17,18,19,20,21]. Fig.…”

Section: Modelmentioning

confidence: 99%

Neutralinos in E $_{6}$ inspired supersymmetric U(1)' models

2002

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The neutralino sector in E 6 inspired supersymmetric models with extra neutral gauge bosons and singlet Higgs fields contains additional gaugino and singlino states compared to the MSSM. We discuss the neutralino mixing in rank 5 and rank 6 models and analyze the supersymmetric parameter space where the light neutralinos have mainly singlino or MSSM character. The neutralino character, different selectron masses and resonance effects of the new gauge bosons lead to significant differences between the MSSM and the extended models in neutralino production at an e + e − linear collider. Beam polarization may improve the signatures to distinguish between the models. In an appendix, we present the mass terms of the gauge bosons, charginos and sfermions which show a significant different mass spectrum than in the MSSM and give all relevant neutralino couplings.

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Efficacious extra U(1) factor for the supersymmetric standard model

Cited by 49 publications

References 21 publications

E6inspired supersymmetric models with exact custodial symmetry

E6inspired supersymmetric models with exact custodial symmetry

Disrupting the one-loop renormalization group invariant M/α in supersymmetry

Neutralinos in E $_{6}$ inspired supersymmetric U(1)' models

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